Serving roughly 17,277 people in Fresno County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for COALINGA-CITY
1 water provider directly on file, serving roughly 17,277 people in Fresno County, California.
Quick answer: COALINGA-CITY has no violations on file and no single reading stands out against its peers (704 other providers in this area). It serves roughly 17,277 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Copper Summary
Orthophosphate
pH
Zinc
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monobromoaceticacid
Dibromoaceticacid
Copper, Free
Aggressive Index
Langelier Index (pH(s))
Magnesium
Potassium
Sodium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
Carbon, Total
TDS
Chloride
Sulfate
Nitrate-Nitrite
Nitrate
Turbidity
Iron
Chromium, Hex
Aluminum
Conductivity (at 25°C)
Color
Utility COALINGA-CITYPopulation served 17,277Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Copper Summary
Detected: 1.43 mg/L (ppm)
12/31/2003
Zinc
Detected: 340 UG/L (ppb)
10/14/2025
Copper, Free
Detected: 100 UG/L (ppb)
9/5/2025
Iron
Detected: 110 UG/L (ppb)
1/6/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Chromium, Hex
Detected: 0.099 UG/L (ppb)
10/7/2025
Aluminum
Detected: 80 UG/L (ppb)
1/6/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 16 UG/L (ppb)
10/14/2025
TTHM
Detected: 48 UG/L (ppb)
10/14/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Chloroform
Detected: 2.6 UG/L (ppb)
7/8/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 34 UG/L (ppb)
10/14/2025
Bromodichloromethane
Detected: 1.8 UG/L (ppb)
10/14/2025
Dibromochloromethane
Detected: 12 UG/L (ppb)
10/14/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 82 MG/L (ppm)
1/6/2025
Sulfate
Detected: 30 MG/L (ppm)
1/6/2025
Nitrate-Nitrite
Detected: 0.56 MG/L (ppm)
1/6/2025
Nitrate
Detected: 0.56 MG/L (ppm)
1/6/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 12 MG/L (ppm)
1/6/2025
Potassium
Detected: 3.2 MG/L (ppm)
1/6/2025
Sodium
Detected: 52 MG/L (ppm)
1/6/2025
Calcium
Detected: 19 MG/L (ppm)
1/6/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Orthophosphate
Detected: 0.3 MG/L (ppm)
10/14/2025
pH
Detected: 7.4 PH
10/14/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Langelier Index (pH(s))
Detected: -0.52 LANG
1/6/2025
Hardness, Total (ASCACO3)
Detected: 95 MG/L (ppm)
1/6/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 82 MG/L (ppm)
10/7/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 2.6 UG/L (ppb)
7/8/2025
Trichloroaceticacid
Detected: 3.4 UG/L (ppb)
4/1/2025
Monobromoaceticacid
Detected: 1.2 UG/L (ppb)
10/14/2025
Dibromoaceticacid
Detected: 15 UG/L (ppb)
10/14/2025
Aggressive Index
Detected: 11.5 AGGR
1/6/2025
Alkalinity, Total
Detected: 82 MG/L (ppm)
10/7/2025
Carbon, Total
Detected: 2.3 MG/L (ppm)
10/7/2025
TDS
Detected: 240 MG/L (ppm)
1/6/2025
Turbidity
Detected: 1.6 NTU
1/6/2025
A measure of water cloudiness from suspended particles.
Conductivity (at 25°C)
Detected: 470 UMHO/CM
1/6/2025
Color
Detected: 10 UNITS
1/6/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.